The Channel 9 star won $820 after betting on Queenslander Felise Kaufusi to score the first try in Wednesday night's State of Origin.
WATCH Karl Stefanovic gets emotional on air
While Karl is a Queensland supporter, the rugby league match was still a win for him.
The This Time Next Year host took to Instagram to share the good news with his followers.
Karl included a screenshot of his $820 winning, adding a Queenslander TradeTools sticker, along with a dancing flamingo.
In addition to that, the former host of the Today show attached the song "P.I.M.P" by 50 Cent to the Instagram story.
Karl is a proud Queensland supporter and a big fan of rugby league in general.
During last year's State of Origin, his wife Jasmine Stefanovic posted a picture of the Channel 9 star wearing a Queensland jersey with his name on it as he watched the match.
"Can anyone explain what I've gotten myself into with this one," Karl's wife wrote in the caption.
This isn't the first time Karl has shown his love for rugby league on social media.
Last year, he posted a photo with his father-in-law, Bob Yarbough, on Instagram.
The two could be seen watching a women's rugby match, and Karl wrote in the caption:
"Can’t tell you how much @bobyarby and I loved the NRL Women’s rugby league final. Power skill and energy. Love to see more of it. Congrats broncs."
The good news comes after Karl's toughest year yet, during which he was axed from the Today Show.
The talk-show host has since been welcomed back to the Nine Network, undertaking assignments for 60 Minutes and hosting This Time Next Year.